What is used to lock video and audio on a track when they come from different media sources?

The Sync Lock Buttons are specifically designed to ensure that audio and video clips remain in sync on a timeline, even when they originate from different media sources. When these buttons are activated on tracks, they prevent any movement or alteration to the media on those tracks that would disrupt the sync relationship between the audio and video. This is particularly useful during editing sessions where multiple clips are involved, as it allows for smoother editing processes without risking unintentional misalignment.

In contrast, the Track Lock Tool and Media Sync Tool do not serve this specific purpose. The Track Lock Tool generally prevents changes to the entire track but does not maintain sync between tracks. The Media Sync Tool is mainly used for synchronizing clips before they are placed on the timeline, rather than maintaining sync after they've been laid down. Similarly, the Clip Grouping Feature allows for the manipulation of multiple clips as a single unit, but it does not inherently lock video and audio tracks in relation to one another for the purpose of synchronization during editing.